Scytinium aragonii (Otálora) Otálora, P.M. Jørg. & Wedin

Fungal Divers., 64, 1: 290, 2013. Basionym: Leptogium aragonii Otálora in Otálora & al. - Taxon, 57: 915, 2008.
Synonyms:
Distribution: N - VG, Ven (Nascimbene & al. 2021), Piem (Otálora & al. 2008), Lig (S-L33867). C - Tosc (Otálora & al. 2008). S - Si (B 60 0113703).
Description: Thallus subfoliose to squamulose, slightly gelatinous when wet, forming 3-8 cm wide patches. Lobes flattened, 2-7 mm wide, with entire to poorly lacerate margins, slightly undulating over the substrate. Upper surface with a few ridges to wrinkled, greenish grey to brown, always matt; lower surface with a few, thin, simple hairs towards the base of lobes. Upper and lower cortices poorly developed, consisting of a single layer of irregularly isodiametrical cells, the layer inbetween with loosely interwoven chains of Nostoc and hyphae. Apothecia rather rare and sparse, lecanorine, laminal to marginal, sessile, 0.3-0.8 mm across, with a brown, concave disc and an entire to lobulate thalline margin. Proper exciple paraplectenchymatous, 10-12 µm wide laterally; epithecium brownish; hymenium colourless, 180-220 µm high, I+ blue; paraphyses mostly simple, 1-1.5 µm thick at mid-level, the apical cells slightly swollen; hypothecium yellowish to pale orange, 30-55 µm high. Asci 8-spored, cylindrical-clavate, the apex strongly thickened, the apical dome K/I+ pale blue, with a downwardly projecting K/I+ deep blue tubular structure. Ascospores submuriform to muriform, hyaline, ellipsoid, (29-)33-43(-52) x (11-)13-17(-19) μm. Photobiont cyanobacterial (Nostoc, the cells in chains). Spot test: all negative. Chemistry: without lichen substances.
Note: widely distributed throughout Europe, occurring in preserved forests from 200 m in northern regions to 1800 m in the southern part of Europe, on pleurocarpous mosses close to the base of trunks, and over mossy walls or calcareous rocks within forests. Often confused with S. gelatinosum, and to be looked for further throughout Italy. The specimens in B, originally labelled as Leptogium lichenoides, were identified by M. G. Otálora.
Growth form: Squamulose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: rare
Padanian area: absent
Humid submediterranean belt: rather common
Humid mediterranean belt: rather rare
Dry mediterranean belt: extremely rare

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples
Index Fungorum GBIF


Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vette Feltrine



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vette Feltrine


Harrie Sipman – Source http://www.bgbm.fu-berlin.de/sipman/Zschackia/AegeanLichens/CaloplacaAC.htm - As Caloplaca oasis


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vette Feltrine



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vette Feltrine



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vette Feltrine


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_aragonii.htm
France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_aragonii.htm
France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_aragonii.htm
France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_aragonii.htm
France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie